Home » ECCouncil » 312-50 » Which digital modulation technique to exchange information between paired devices?
Bluetooth uses which digital modulation technique to exchange information between paired devices?
A. PSK (phase-shift keying)
B. FSK (frequency-shift keying)
C. ASK (amplitude-shift keying)
D. QAM (quadrature amplitude modulation)
Correct Answer: A
Explanation/Reference:
Phase shift keying is the form of Bluetooth modulation used to enable the higher data rates achievable with Bluetooth 2 EDR (Enhanced Data Rate). Two forms of PSK are used: p/4 DQPSK, and 8DPSK.
References: http://www.radio-electronics.com/info/wireless/bluetooth/radio-interface-modulation.php
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